Giant performance improvement of triboelectric nanogenerator systems achieved by matched inductor design

Abstract

We proposed a universal design strategy of a matched inductor for TENG with parameters studied from both theory and experiments systematically. The results show giant performance improvement for TENG system.

A highly efficient constant-voltage triboelectric nanogenerator

“…The output performance of the CV-TENG under a resistance load Even though the high voltage (BkV) and low current (BmA) characteristics of TENGs does not suit existing electronics, they work well with the help of power management systems. 5,18,31 Therefore, exploring the maximum average power output of a TENG is of great significance when judging whether it has the ability to supply high effective power continuously, which is of great importance for the development of TENGs into a major form of energy technology. The output performances of the CV-TENG and PV-TENG under a resistance load are shown in Fig.…”

“…[32][33][34][35] Considering that existing mature power management systems all need a capacitor to acquire electrical energy from the TENG first, it is worth deeply investigating the performances of CV-TENGs and PV-TENGs under a capacitance load with the aim of acquiring maximum average power. 5,17,18,31 Here the performances of CV-TENGs and PV-TENGs under a capacitance load are evaluated using a single capacitor (0.22 mF), where the CV-TENG and PV-TENG are controlled by switches K 1 and K 2 , respectively, when connecting to the capacitor (Fig. 3a).…”

“…17 Recently, the power management of PV-TENGs has attracted more attention, which is desirable when using TENGs to power electronics and is of great significance for promoting the commercialization of TENGs in the near future. 5,18,31 Therefore, a power management method for the CV-TENG is urgently needed to help match it to ordinary electronics efficiently (Fig. 5f).…”

“…In reality, regardless of whether a CV-TENG or PV-TENG is used, the idea of power management is the same, that is, converting high-voltage energy into a high current. 5,18,31 Therefore, a universal power management strategy for TENGs can be summarized in two steps, as shown in Fig. 5g.…”

Recent Progress of Switching Power Management for Triboelectric Nanogenerators

“…The abovementioned electrical characteristics cannot match the input requirements of stable DC power for conventional electronic devices. In order to reduce the voltage and impedance, and improve electrical energy supply efficiency, researchers have proposed many methods of switching power management for TENGs [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58]. Figure 1 shows the progress of the power management methods from 2013 to 2021. the end of the review, we summarize the deficiencies and research challenges of switching power management and give brief prospects for the future development of TENG power management.…”